Subject: Re: [PATCH]: powerpc: Fix build breakage due to incorrect location of autoconf.h

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 14 Jan 2010 20:43:44 +1100

On Thu, 2010-01-14 at 10:12 +0100, Joakim Tjernlund wrote:
> > No, that was on purpose. If an arch doesn't have efficient unaligned
> > accesses, then they should not use the optimization since it will
> result
> > in a lot of unaligned accesses :-) In which case they are better off
> > falling back to the old byte-by-byte method.
> 
> Not quite, it is only 1 of 4 accesses that uses unaligned and
> that accesses is only unaligned 50% in average, it might still
> be faster. We will never know now.

Why ? If you think it's a win, then it's easy to make a patch to turn
it to __KERNEL__ and ask some people from ARM and MIPS or even sparc
land for example to give it a spin. If it's indeed a win, then submit it
to Linus and/or Andrew and there's no reason for it not to go in.

I simply took a more conservative approach for post -rc4

Cheers,
Ben.